Wrench or the like.



Patented June 21, 1904..

FREDERICK E. VALDEN, OF WORCESTER, MASSACHUSETTS, ASSIGNOR OF ONE-HALFTO FREDERIC TUDOR, OF BOSTON, MASSACHUSETTS.

WRENCH OR THE LIKE.

SPECIFICATION forming part of Letters Patent No. 763,227, dated June 21,1904. Application led October 15, 1903. Serial No. 177,159. (No model.)

To all w/tmn zt muy concern:

Be it known that I, FREDERICK E. WALDEN, a citizen of the United States,and a resident of I/Vorcester, in the county of Worcester and State ofMassachusetts, have invented new and useful Improvements in Wrenches orthe Like, of which the following is a specification.

My invention relates to wrenches, particularly to pipe-wrenches, and hasfor its object to provide an improved article of this class which willbe simple in construction, powerful, and easily operated.

My improved pipe-wrench comprises a fixed jaw provided with a handle, amovable jaw provided with a handle and constituting one member of atoggle, and a linkl constituting the other` member of that toggle, saidlink being connected at one end with the fixed jaw and at its other endwith the movable jaw. Pressure upon the two handles tends to straightenthe toggle and to force the two jaws together onto the work with greatforce. In the best form of my invention the handle of the movable jaw ispivotally connected to said jaw, and between that pivotal connection andits free end said handle is also pivotally connected to one end ot' alink, which at its other end is pivotally connected to the handle of thefixed jaw. This second link not only serves to direct the movements ofthe pivoted handle of the movable jaw, but, together with said handle,constitutes a second toggle by which the first toggle is operated. Inthis way the multiplying effect of the first toggle, of which themovable jaw constitutes a member,is enhanced by the Inultiplying effectof the second toggle.

Other features of my invention are hereinafter pointed out.

In the accompanying drawings, Figure l is a side view of a pipe-wrenchembodying one form of my invention. Fig. 2 is a section on line 2 2of-Fig. l.

Having reference to the drawings, A represents the fixed jaw of myimproved pipewrench, said jaw being provided with an integral handle a.

B represents the movable jaw of the wrench. The movable jaw Bis madewith a lug U, pivotally connected by a bolt b2 with the ends of a pairof links c c. The other ends of the links c are pivotally connected withthe jaw A by a bolt c. The movable jaw B is provided with a handle Z13,made with a lug b4, pivotally mounted on the bolt b2 alongside the lugof jaw B. At 6 handle 3 is pivotally connected to one end of a link b5,whose other end is pivotally connected to the handle t of jaw A. Thatpart of' handle 3 between bolt b2 and pivot b and designated bsconstitutes one member and link b5 the other member of a second toggle.The two jaws and their handles are so arranged relatively that thedirection or' thrust of the second toggle is substantially perpendicularto the direction of thrust of the first toggle and operates the latter,thus making the wrench in its best form an exceedingly powerfulinstrument.

I/Vhen the form of my invention shown in Fig. 1 is used, and the twojaws A and B are brought to bear upon a pipe, pressure upon the twohandles a and b3 tends to move the pivot b into line with pivots b2 and67, so that handle If is moved endwise toward jaw A. This endwisepressure on handle b3tends to thrust the pivot b2 in between the workand pivot c', with the result that the two jaws A and B are clamped ontothe work.

My improved wrench is simple and strong in its construction, andtherefore capable of standing considerable hard usage, and, moreover, inits best form the double arrangement of toggle provides an exceedinglyefficient pipe-wrench of great power.

What I claim is- 1. A wrench comprising a fixed jaw provided with ahandle; a movable jaw constituting one member of a toggle; a handlepivotally connected with the movable jaw, and a link connecting themovable jaw with the fixed jaw and constituting the other member of thetoggle.

2. A wrench comprising a fixed jaw provided with a handle; a movable jawconstituting one member of a toggle; a handle pivotally connected withthe movable jaw; a link connecting the movable jaw with the fixed jawand constituting the other member of that toggle, and aV second linkconnecting the handle of the movable jaw with the handle of the lixedjaw so as to provide a second toggle for operating the iirst-mentionedtoggle.

3. A Wreneh comprising a fixed jaw p10- vided with a handle; amovablejaw Constituting one member of a toggle; a handle pivotally ConnectedWith the movable jaw; a link Connecting the movable jaw with the fixedjaw and constituting the other member of that toggle, and a second linl;connecting the handle of the movable jaw with the handle of the liXedjaw so as to provide a second toggle for operating the first-mentionedtoggle, the direction of thrust of said second toggle beingsubstantially perpendicular to that of the lirst 15 toggle.

Signed by me at Boston, Massachusetts, this 15th day of September, 1903.

FREDERICK E. WALDEN. Vitnesses:

ROBERT CUSHMAN, ARTHUR F. RANDALL.

